<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h2>这是全部图书列，点击图书标题课查看详细详细</h2>
<b>{{ pr_str }}</b>
<br><hr>
<ul>
    {% for book in books %}
        <li>
            <a href="/book_detail/{{ book.id }}">{{ book.title }}</a>
        </li>
    {% endfor %}

</ul>





</body>
</html>